| Ovings Limited | Professional & scientific | 2020 |
| OVU Digital Ltd | Information & communication | 2026 |
| Oxford Real Estate Society | Other services | 2017 |
| OXI Group Limited | Information & communication | 2022 |
| Ozcat Limited | Professional & scientific | 2020 |
| P & a Works Limited | Arts & recreation | 2020 |
| P & G Investments (Midlands) Limited | Financial services | 2022 |
| P & G Properties (Midlands) Limited | Construction | 2020 |
| P & R Taxation Services Limited | Professional & scientific | 2020 |
| P & S Industrial Services Limited | Professional & scientific | 2011 |
| P D Private Client Limited | Administrative & support | 2018 |
| P F Security Services Ltd | Administrative & support | 2013 |
| P Hooper Roofing & Building Services Ltd | Construction | 2016 |
| P L T Social Care Limited | Health & social care | 2004 |
| P R Building Limited | Construction | 2006 |
| P&C Housing Ltd | Real estate | 2022 |
| P. Ellerton Decorators Ltd. | Construction | 2023 |
| P. K. Tighe Delph Transport Limited | Transport & logistics | 1973 |
| P. Knight Consulting Ltd | Professional & scientific | 2012 |
| P. Mobberley Carpenters Limited | Construction | 1998 |
| P. Patterns Limited | Manufacturing | 2003 |
| P.K. Rentals Limited | Professional & scientific | 2009 |
| P.L.M. Illumination Limited | Manufacturing | 1997 |
| P.Mobberley Holdings Ltd | Construction | 2020 |
| P1 Prestige Ltd | Wholesale & retail | 2023 |
| P4PET Ltd | Wholesale & retail | 2026 |
| PA Cars Ltd | Wholesale & retail | 2015 |
| Pabari Dental Clinics Limited | Health & social care | 2014 |
| Pacegrade Limited | Manufacturing | 1977 |
| Pacoburn Property Investment Ltd | Real estate | 2018 |
| Palakan Properties Ltd | Real estate | 2024 |
| Paloma Beach T2.57 Limited | Professional & scientific | 1986 |
| Palzino Ltd | Information & communication | 2021 |
| Panda Family Baby Massage Ltd | Health & social care | 2024 |
| Panmario (Dudley) Limited | Hospitality | 2018 |
| Pannu Brothers Ltd | Hospitality | 2022 |
| Panoramic Capital Limited | Financial services | 2020 |
| PAP Partnership | | 2001 |
| Paper Family Ltd | Wholesale & retail | 2020 |
| Paradise Massage Limited | Health & social care | 2025 |
| Paradizza Pizzeria & Desserts Group Ltd | Hospitality | 2022 |
| Pardoe Electrical Ltd | Construction | 2016 |
| Parenting Apart Limited | Professional & scientific | 2013 |
| Park Side Manor Management Co Ltd | Households | 2024 |
| Parkers Decorating Solutions Limited | Construction | 2023 |
| Parkhill Property Management Limited | Real estate | 2024 |
| Parts City Ltd | Wholesale & retail | 2014 |
| PAS Data Systems Limited | Information & communication | 2003 |
| Patron Property Management Limited | Real estate | 2025 |
| Paul and IAN Walker Property Limited | Administrative & support | 2018 |
| Paul Andrews Limited | Professional & scientific | 1999 |
| Paul Farrow Driveways Limited | Administrative & support | 2017 |
| Paul Ravenhall Consulting Ltd | Professional & scientific | 2010 |
| Paul Walker Property Limited | Real estate | 2005 |
| Paul Walker Property Management Limited | Real estate | 2023 |
| Pauls Pet Minders Limited | Wholesale & retail | 2014 |
| Pavecon Ltd | Construction | 2024 |
| PAY4MEDIA Ltd | Wholesale & retail | 2021 |
| PAY4PROPERTY Ltd | Real estate | 2015 |
| Payroll Management Services (UK) Limited | Administrative & support | 2013 |
| PB Change Consulting Ltd | Information & communication | 2017 |
| PB Frames Limited | Manufacturing | 2018 |
| PB Property Holding Limited | Real estate | 2003 |
| PC & Software Consultancy Limited | Information & communication | 2013 |
| PC Finishing Ltd | Construction | 2016 |
| PCB Assembly Specialist Ltd | Manufacturing | 2017 |
| PCQ Management Ltd | Extraterritorial | 2019 |
| Pcrdk Limited | Extraterritorial | 2023 |
| PD Developers Limited | Construction | 2023 |
| PDM Carpentry Limited | Construction | 2008 |
| PDY Design Limited | Information & communication | 2016 |
| Peaceful Pets Crematorium Ltd | Professional & scientific | 2024 |
| Pearl Media Europe Limited | Professional & scientific | 2018 |
| Pearlescent Accounting Limited | Professional & scientific | 2025 |
| Pearmain Garden Management Company Ltd | Extraterritorial | 2016 |
| Peartree Lodge Rental Ltd | Real estate | 2021 |
| Peartree Pine Company Limited | Manufacturing | 1998 |
| Peca & SON Ltd | Wholesale & retail | 2024 |
| Pedmore Capital Limited | Professional & scientific | 2024 |
| Pedmore Dog Training Ltd | Agriculture & fishing | 2019 |
| Pedmore Logs Ltd | Wholesale & retail | 2023 |
| Pedmore Medical Ltd | Health & social care | 2018 |
| Pegasus Cars Sale Ltd | Wholesale & retail | 2021 |
| Peking House 138 Limited | Hospitality | 2022 |
| Pelt Services Limited | Professional & scientific | 2012 |
| Penridge Wealth Management Limited | Professional & scientific | 2019 |
| Penstock Solutions Limited | Professional & scientific | 2023 |
| Pentpay Ltd | Public administration | 2025 |
| Peregrine Surgical Support Ltd | Health & social care | 2026 |
| Perfect Brickwork Limited | Construction | 2024 |
| Perfectly Organic Cleaning Ltd | Administrative & support | 2019 |
| Perfume Plug Ltd | Wholesale & retail | 2025 |
| Perkinshyde Ltd | Administrative & support | 2025 |
| Perranuthnoe Cabin Ltd | Hospitality | 2025 |
| Perry Financial Solutions Limited | Financial services | 2007 |
| Perseverando Limited | Professional & scientific | 2015 |
| Personalised Steel Limited | Manufacturing | 2016 |
| Perth Group Ltd | Financial services | 2025 |
| Pest Interceptors Ltd | Administrative & support | 2021 |
| Pestridge Consulting Limited | Professional & scientific | 2019 |